Proto JSCV10T Combination Wrench 5/16 Inch Ratcheting

Product Description

The PROTO JSCV10T is a 5/16 inch combination wrench built for professional tradespeople who need reliable torque in tight spaces. It features a 12-point ratcheting box end with a reversing mechanism, allowing the user to drive fasteners without repositioning the wrench. The 15-degree offset head reduces knuckle clearance issues in confined work areas. Constructed from steel with a corrosion-resistant chrome finish, this wrench meets ASME B107.100-2010 standards for combination wrenches. At 5.5 inches overall length and 0.08 pounds, it is compact enough for overhead electrical panels, HVAC equipment cabinets, and plumbing fixture work.

The JSCV10T suits HVAC technicians, electricians, plumbers, and mechanical contractors working on equipment requiring 5/16 inch fasteners. The tether-capable design makes it appropriate for elevated work or jobsites with dropped-tool hazards, such as rooftop unit service or elevated mechanical platforms. The straight handle and offset box end together make this a practical everyday service wrench for both residential and light commercial applications.

Key Features

• 12-point ratcheting box end with reversing mechanism for efficient fastener driving
• 15-degree offset head angle reduces knuckle interference in confined spaces
• Tether capable for use on elevated work surfaces and safety-sensitive jobsites
• Corrosion-resistant chrome finish over steel construction
• Meets ASME B107.100-2010 combination wrench standard
• Compact 5.5 inch overall length suited to tight equipment access panels

Compatibility

Designed for use with 5/16 inch fasteners across standard HVAC, plumbing, electrical, and mechanical service applications.

Installation Notes

A licensed or qualified tradesperson should select the correct wrench size before applying torque to avoid fastener rounding. Always de-energize electrical equipment and shut off fluid or refrigerant systems before accessing fastener connections. Inspect the wrench for cracks or wear before each use. When working at height, connect the tether point to an approved lanyard anchor to comply with applicable fall-protection and tool-tethering requirements.